20 [ 2nd ] [ ENG SYM ] [ 
] [ 
]
[ 
] [ + ] 0.15 [ 2nd ] [ ENG SYM ]
[ 
] [ 
]
Example 15
( 5 – 2 × 1.5 ) × 3 = 6
[ ( ) ] 5 [ – ] 2 [ × ] 1.5 [ 
]
[ × ] 3 [ 
]
Example 16
2 × { 7 + 6 × ( 5 + 4 ) } = 122
2 [ × ] [ ( ) ] 7 [ + ] 6 [ × ]
[ ( ) ] 5 [ + ] 4 [ | ] |
Example 17
120 × 30 % = 36
120 [ × ] 30 [ 2nd ] [ % ]
[ 
]
788 
55% = 160
